CN216888314U

CN216888314U - Marine fuel tank and manhole assembly thereof

Info

Publication number: CN216888314U
Application number: CN202121329187.1U
Authority: CN
Inventors: 陈宏�
Original assignee: China International Marine Containers Group Co Ltd; CIMC Enric Investment Holdings Shenzhen Co Ltd; Nantong CIMC Sinopacific Ocean Offshore and Engineering Co Ltd
Current assignee: China International Marine Containers Group Co Ltd; CIMC Enric Investment Holdings Shenzhen Co Ltd; Nantong CIMC Sinopacific Ocean Offshore and Engineering Co Ltd
Priority date: 2021-06-15
Filing date: 2021-06-15
Publication date: 2022-07-05
Anticipated expiration: 2031-06-15

Abstract

The present disclosure provides a marine fuel tank and a manhole assembly thereof, wherein the manhole assembly includes: the marine fuel tank comprises a barrel section communicated with a marine fuel tank body, a flange plate arranged at one end of the barrel section, which is far away from the marine fuel tank, a manhole cover arranged on the flange plate and tightly connected with the flange plate, a suspension arm arranged at one side of the barrel section, a lifting rod with one end connected and fixed with the manhole cover and a rotating piece. The suspension arm comprises an axial arm arranged along the axial direction of the shell ring and a bending arm connected with the axial arm in a bending way; the bending arm extends from the axial arm to the axis of the shell ring; the other end of the lifting rod penetrates through the end part of the bending arm. The rotating piece is arranged on one side, deviating from the manhole cover, of the bending arm, sleeved on the lifting rod and in threaded connection with the lifting rod, and used for driving the lifting rod to lift through the threads. The technical problems that manual carrying is time-consuming and labor-intensive in the prior art and labor intensity of workers is high are solved.

Description

Marine fuel tank and manhole assembly thereof

Technical Field

The disclosure relates to the technical field of transport cases, in particular to a marine fuel tank and a manhole assembly thereof.

Background

The marine fuel tank is a transportation tank widely used in marine transportation ships, and has a design temperature range of +45 ℃ to-163 ℃, a design internal pressure of not more than 10bar and a daily evaporation rate of less than 0.3 percent. When liquid cargo loading, daily maintenance of the liquid tank and operation of the ship are carried out, the manhole cover on the ship needs to be opened and closed in a matched mode. However, in order to allow workers to easily pass through the manhole and also to ensure the tightness of the manhole, the manhole covers are generally large in size and not light in weight. When opening and closing, if adopt artifical transport's mode, then waste time and energy, increased workman's intensity of labour.

SUMMERY OF THE UTILITY MODEL

An object of the present disclosure is to provide a manhole cover and a manhole assembly thereof that can be opened and closed more conveniently.

In order to solve the technical problem, the following technical scheme is adopted in the disclosure:

according to one aspect of the present disclosure, there is provided a manhole assembly of a marine fuel tank, including:

a shell ring communicated with the marine fuel tank body;

the flange is arranged at one end of the cylinder section, which is far away from the marine fuel tank;

the manhole cover is covered on the flange plate and is fixedly connected with the flange plate;

the suspension arm is arranged on one side of the shell ring and comprises an axial arm arranged along the axial direction of the shell ring and a bending arm connected with the axial arm in a bending way; the bending arm extends from the axial arm to the axis of the manhole;

the lifting rod is fixedly connected with the manhole cover and penetrates through the end part of the bending arm;

the rotating piece is arranged on one side, deviating from the manhole cover, of the bending arm, sleeved on the lifting rod and in threaded connection with the lifting rod, and used for driving the lifting rod to lift through the threads.

According to one aspect of the present disclosure, there is provided a marine fuel tank including:

a tank body;

the manhole assembly is arranged on the tank body, and a cylinder section of the manhole assembly is communicated with the inner space of the tank body.

According to the technical scheme, the method has the advantages that:

in the disclosure, through the threaded fit of the rotating piece and the lifting rod, a relevant worker can lift the lifting rod and the manhole cover connected with the lifting rod only by rotating the rotating piece, and the longer the handle arranged on the rotating piece is, the more labor is saved. The technical problems that manual carrying is time-consuming and labor-intensive in the prior art and labor intensity of workers is high are solved. Simultaneously because this openly adopts revolving part and lifter screw-thread fit's mode for this disclosed manhole subassembly simple structure, the reliability is high, and at the manhole cover in-process that rises, even the workman stops the operation, the manhole cover also can not drop owing to the auto-lock of revolving part and lifter, has higher security.

Drawings

Fig. 1 is a partial structural schematic view of a marine fuel tank according to an embodiment of the present disclosure.

Fig. 2 is a partial structural view of a manhole assembly of the marine fuel tank shown in fig. 1.

Figure 3 is an enlarged view of the manhole assembly shown in figure 2 at a.

Figure 4 is an enlarged view of the manhole assembly shown in figure 2 at B.

Figure 5 is a partial schematic view of another angle of the manhole assembly shown in figure 2.

1. A tank body; 2. a manhole assembly; 100. a shell ring; 200. a flange plate; 300. a manhole cover; 400. a suspension arm; 500. a lifting rod; 600. a rotating member; 102. a thermal barrier coating; 110. a fixed plate assembly; 111. a first fixing plate; 112. a second fixing plate; 113. a web; 210. a ring groove; 220. sealing gaskets; 310. a connecting plate; 320. an annular projection; 330. a central bulge; 410. an axial arm; 420. a bending arm; 430. a connecting section; 411. a pin shaft hole; 421. bending the end; 510. a sleeve; 610. a screw connection part; 620. a handle portion.

Detailed Description

While this disclosure may be susceptible to embodiment in different forms, there is shown in the drawings and will herein be described in detail only some specific embodiments thereof with the understanding that the present description is to be considered as an exemplification of the principles of the disclosure and is not intended to limit the disclosure to that as illustrated herein.

Thus, a feature indicated in this specification will serve to explain one of the features of one embodiment of the disclosure, and not to imply that every embodiment of the disclosure must have the stated feature. Further, it should be noted that this specification describes many features. Although some features may be combined to show a possible system design, these features may also be used in other combinations not explicitly described. Thus, the combinations illustrated are not intended to be limiting unless otherwise specified.

In the embodiments shown in the drawings, directional references (such as upper, lower, left, right, front and rear) are used to explain the structure and movement of the various elements of the disclosure not absolutely, but relatively. These descriptions are appropriate when the elements are in the positions shown in the drawings. If the description of the positions of these elements changes, the indication of these directions changes accordingly.

Some embodiments of the disclosure are further elaborated below in conjunction with the drawings of the present specification. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

The present disclosure provides a fuel tank for a ship for storing and transporting various Liquefied fuel gases, such as Liquefied Natural Gas (LNG), Liquefied Petroleum Gas (LPG), and the like, at sea, and in the present embodiment, the fuel tank for a ship is mainly used for storing and transporting LNG.

Referring to fig. 1, the fuel tank for a ship includes a tank body 1 and a manhole assembly 2 provided on the tank body 1. The manhole assembly 2 is positioned at one side of the tank body 1 and is communicated with the inner space of the tank body 1, so that a related maintenance worker can conveniently enter the inner part of the tank body 1 through the manhole assembly 2 to perform maintenance work.

Wherein, manhole subassembly 2 includes: the tank comprises a shell ring 100 communicated with a tank body 1, a flange plate 200 arranged at one end of the shell ring 100 far away from the tank body 1, a manhole cover 300 covered on the flange plate 200 and tightly connected with the flange plate 200, a suspension arm 400 arranged at one side of the shell ring 100, a lifting rod 500 connected and fixed on the manhole cover 300 and a rotating member 600 sleeved on the lifting rod 500.

Referring to fig. 2, the suspension arm 400 is bent and includes an axial arm 410 disposed along the axial direction of the cylinder section 100 and a bending arm 420 connected to the axial arm 410. The bent arm 420 extends from the axial arm 410 in the axial direction of the shell section 100, and its end is located near the axis of the shell section 100. The bending arm 420 may be disposed along a direction perpendicular to the axial arm 410, or may be disposed along a direction oblique to the axial arm 410, which is not limited herein, and in this embodiment, the bending arm 420 is perpendicularly connected to the axial arm 410.

Referring to fig. 3, the rotating member 600 is disposed on a side of the bending arm 420 facing away from the manhole cover 300. One end of the lifting rod 500 is fixedly connected with the manhole cover 300, and the other end passes through the end of the bending arm 420 and is inserted into the rotating member 600. The rotary member 600 is screw-coupled to the lifting rod 500 to drive the lifting rod 500 to be lifted by the screw. The rotating member 600 includes a screw joint portion 610 sleeved on the lifting rod 500 and a handle portion 620 disposed on the screw joint portion 610, wherein the handle portion 620 extends outward from the screw joint portion 610 in a radial direction of the lifting rod 500. When the manhole cover 300 needs to be opened, the lifting rod 500 and the manhole cover 300 connected with the lifting rod 500 can be lifted by only holding the handle part 620 and rotating the rotating member 600, and it can be known from the related physical laws that the longer the handle part 620 is, the more labor-saving the rotating process is, and the manhole cover 300 of the manhole assembly 2 can be opened by a single person as long as the length of the handle part 620 is enough. Meanwhile, due to the self-locking effect of the threads, after the rotating piece 600 stops rotating, the manhole cover 300 cannot directly fall off, but is suspended in the air, and therefore the safety is high. In other embodiments of the present disclosure, the rotating member 600 may also include only the screw connection portion 610, and a side circumferential surface of the screw connection portion 610 is provided with a mounting hole to externally connect to the handle.

The manhole cover 300 is perpendicularly provided with two connecting plates 310 at a side facing away from the shell ring 100, that is, a side facing the lifting rod 500, and the two connecting plates 310 are respectively located at both sides of the lifting rod 500 to clamp the end of the lifting rod 500. The lifting rod 500 is provided with a sleeve 510 at an end facing the manhole cover 300, and the sleeve 510 is received between the two connection plates 310. The two connection plates 310 and the sleeve 510 are fastened together by a fastener penetrating the two connection plates 310, and the fastener is received in the sleeve 510 so that the manhole cover 300 can be rotated around the sleeve 510. Meanwhile, the manhole cover 300 can be conveniently disassembled and assembled in the future through fastening connection of the fastening piece, and the cost of subsequent maintenance is reduced.

Since the suspension arm 400 is disposed at one side of the shell ring 100, the side of the shell ring 100 is correspondingly disposed with the fixing plate assembly 110, and the axial arm 410 is axially inserted into the fixing plate assembly 110 along the shell ring 100 to be rotatably connected with the fixing plate assembly 110. The axial arm 410 is rotatable within the fixing plate assembly 110 to facilitate the manhole assembly 2 to adapt to different use environments, and after the manhole cover 300 is lifted by the lifting rod 500, the manhole cover 300 can be moved away from the shell section 100 by rotating the suspension arm 400, so as to leave a space for people to enter and exit in a narrow space. Meanwhile, after the hanging arm 400 is rotated to enable the manhole cover 300 to be far away from the shell ring 100, the manhole cover 300 can be transferred to other bearing platforms, so that the manhole cover 300 can be replaced conveniently.

Referring to fig. 2 and 5, the fixing plate assembly 110 includes a first fixing plate 111, a second fixing plate 112 and a web 113 disposed oppositely. The first fixing plate 111 is vertically disposed on the peripheral side of the flange plate 200, the second fixing plate 112 is vertically disposed on the sidewall of the shell ring 100, and the web 113 is vertically disposed between the first fixing plate 111 and the second fixing plate 112, and is welded to the first fixing plate 111 and the second fixing plate 112. The axial arm 410 axially penetrates the first fixing plate 111 and the second fixing plate 112 along the shell ring 100 and is located between the web 113 and the shell ring 100.

To achieve rotatable connection of boom arm 400 to fixed plate assembly 110, a link 430 is also provided between axial arm 410 and bending arm 420. The connecting joint 430 is disposed at one end of the axial arm 410 connected to the bending arm 420, and is used for connecting to the bending end 421 of the bending arm 420. The connecting joint 430 protrudes from the axial arm 410 in the radial direction of the axial arm 410, and abuts against a surface of the first fixing plate 111 facing the bending arm 420, so as to prevent the bending end 421 of the bending arm 420 from being caught in the first fixing plate 111, which may cause the suspension arm 400 to rotate unsmoothly. In this embodiment, the connecting joint 430 is a cylinder with a radius larger than that of the axial arm 410, and is coaxial with the axial arm 410. After the assembly is completed, the connecting joint 430 is in abutting contact with the first fixing plate 111, and sliding friction exists between the connecting joint 430 and the first fixing plate 111 in the rotating process, so that the suspension arm 400 is ensured to rotatably penetrate through the fixing plate assembly 110 and is connected and fixed with the fixing plate assembly 110.

Meanwhile, the axial arm 410 is further provided with a pin shaft hole 411 which penetrates through the axial arm 410 along the radial direction. The pin hole 411 is located on a side of the second fixing plate 112 facing away from the first fixing plate 111. Correspondingly, the manhole assembly 2 further includes a pin (not shown) inserted into the pin hole 411 to limit the axial arm 410, so as to prevent the axial arm 410 from moving axially to separate the end portion from the second fixing plate 112, which results in the failure of the rotation function of the boom 400.

Referring to fig. 4, a ring groove 210 surrounding the central axis of the shell section 100 is formed on one side of the flange 200 facing the manhole cover 300. The ring groove 210 is provided with a sealing gasket 220 therein, and the sealing gasket 220 may be made of teflon or the like, so as to seal the manhole assembly 2 and provide a heat insulation effect. Meanwhile, an annular protrusion 320 corresponding to the ring groove 210 is correspondingly arranged on one surface of the manhole cover 300 facing the flange 200, the annular protrusion 320 is clamped in the ring groove 210 and is in press fit connection with the sealing gasket 220, so that the sealing gasket 220 is completely filled in the ring groove 210, gaps around the sealing gasket 220 are reduced, and the sealing effect and the heat insulation effect of the manhole cover 300 are further ensured. Meanwhile, in order to further ensure the sealing effect and the heat insulation effect of the manhole cover 300, a central bulge 330 protruding into the shell ring 100 is further arranged on one side of the manhole cover 300 facing the shell ring 100.

The end of the shell section 100 that is connected to the tank 1 is also coated with a thermal barrier coating 102. The thermal barrier coating 102 may also be applied to the entire outer circumferential surface of the joint 100 and extend to the entire tank body 1, so as to ensure the thermal barrier effect of the marine fuel tank, particularly at the joint 100. The thermal barrier coating 102 may be composed of a thermal barrier material such as polyurethane vinyl.

While the present disclosure has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present disclosure may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims

1. A manhole assembly for marine fuel tanks, comprising:

a shell ring communicated with the marine fuel tank body;

the suspension arm is arranged on one side of the shell ring and comprises an axial arm arranged along the axial direction of the shell ring and a bending arm connected with the axial arm in a bending way; the bending arm extends from the axial arm to the axis of the shell ring;

one end of the lifting rod is fixedly connected with the manhole cover, and the other end of the lifting rod penetrates through the end part of the bending arm;

2. The manhole assembly as claimed in claim 1, wherein two connecting plates are vertically provided on one side of the manhole cover facing the lifting rod, the two connecting plates are respectively provided on both sides of the lifting rod to clamp an end of the lifting rod, and the manhole cover is fastened to the lifting rod by a fastening member penetrating through the two connecting plates and the lifting rod.

3. The manhole assembly as claimed in claim 2, wherein the lifting rod has a sleeve at an end thereof facing the connection plates, the sleeve being received between the connection plates and being sleeved on a fastening member penetrating the connection plates.

4. The manhole assembly of claim 1, wherein a fixing plate assembly is vertically provided at one side of the shell ring, and the axial arm is axially inserted into the fixing plate assembly along the shell ring and rotatably connected to the fixing plate assembly.

5. The manhole assembly as claimed in claim 4, wherein the fixing plate assembly includes a first fixing plate and a second fixing plate disposed opposite to each other, the second fixing plate is vertically disposed on the sidewall of the shell ring, and the first fixing plate is vertically disposed on the peripheral side of the flange;

the axial arm axially penetrates through the first fixing plate and the second fixing plate along the shell ring, a connecting joint is arranged between the axial arm and the bending arm, and the connecting joint protrudes out of the axial arm along the radial direction of the axial arm and is abutted to one surface, facing the bending arm, of the first fixing plate.

6. The manhole assembly as claimed in claim 5, wherein a web is vertically disposed between the first fixing plate and the second fixing plate, and the web is located on a side of the axial arm facing away from the shell ring and is welded to the first fixing plate and the second fixing plate respectively.

7. The manhole assembly as claimed in claim 5, wherein the axial arm is provided with a pin hole penetrating through the axial arm in a radial direction thereof, and the pin hole is located on a side of the second fixing plate facing away from the first fixing plate; the manhole assembly further comprises a pin shaft which is arranged in the pin shaft hole in a penetrating mode.

8. The manhole assembly of claim 1, wherein the flange has a circumferential groove around a central axis of the shell, and a sealing gasket is disposed in the circumferential groove and abuts against the manhole cover.

9. The manhole assembly as claimed in claim 8, wherein a surface of the manhole cover facing the flange has an annular protrusion corresponding to the annular groove, and the annular protrusion is engaged with the annular groove and press-fitted to the sealing gasket.

10. The manhole assembly of claim 1, wherein the outer peripheral wall of the shell ring is further coated with a thermal barrier coating.

11. The manhole assembly of claim 10, wherein the thermal barrier coating is applied to an end of the shell section that is connected to the marine fuel tank body.

12. A marine fuel tank, comprising:

a tank body;

a manhole assembly as claimed in any one of claims 1 to 11, provided on the tank body, a shell section of the manhole assembly communicating with the inner space of the tank body.